The seamless steel tubes made by company are based on the DIN EN (DIN2391) Standard. The hot rolled seamless tube produced by Shanghai Baosteel Company is used as transfer bar of our company. The finished product is made with the exclusive process of cold drawing and/or cold rolling of our company. The steel tube is featured with high precision and high brightness. Because of using the exclusively nonoxidizable process of bright heat treatment, the inner and outer walls have high cleanness without oxidized surface. The tube has the excellent mechanical properties, resulting in no leakage under the high pressure, no deformation after cooling bent and no seam after flaring and pressing in different applications.